Quickstart reference
What to enter for carb ratios and correction rules?
Within the profile wizard or on the profile tab you can enter the details needed for the calculation of a bolus dose: When you've entered a blood glucose level and your carb intake, SiDiary will calculate a dose for your bolus injection. To make this work well for your individual purposes, you have to set-up how many insulin units you have to inject for each gram of carbs, for each main meal type (breakfast, lunch and dinner).
For example if you have an intake of 60 gr. of carbs at breakfast and you will inject 8 units of your bolus insulin your CH ratio for breakfast time will be 0.133 by using the European formula (language settings). If you have selected the US formula, you would enter the number of carbs which are covered by 1 unit of bolus insulin! You can set-up three different ratios for the main meal times since they could vary.
Additionally you have to specify your correction rule for the main meals: The correction rule is for situations where your blood glucose level is too high. If that is the case, then you will have to inject a little more insulin not only for the intake of carbohydrates but to get your bg level down to target as well. If you've entered a value of 30 for example, the program will add a correction dose of one insulin unit for each 30 mg/dl too high.
If you have installed the predefined US version of SiDiary, this package comes with settings for using the US bolus formula and am/pm time format. If you have installed the multi-language package you will see the language selection screen on the very first start of the software. On this screen you can also select from the 2 bolus formulas!
Detailed example:
Let's say you have monitored a bg level of 160 mg/dl and want to eat 50 gr of carbohydrates for lunch. Your CH ratio for lunch is 0.15 and the correction rule is 30. SiDiary will suggest a bolus dose based on the following formulas:
Dosage for meal = 60 {gr} * 0.15 {units per gr} = 9 units
Dosage for correction = (160 - 100 *) {mg/dl}) / 30 {mg/dl per unit} = 2 units
Insulin units = Dosage for meal + Dosage for correction = 9 + 2 = 11 units
After selecting the U.S. formula SiDiary will calculate in the following way (Select "settings->language->Bolus (U.S.)"):
Dose for meal = 60 {gr} / 7 {gr per unit} = 8.6 units
*) assuming that 100 mg/dl is your blood glucose target level. This target value is the middle of the both values entered on the profile tab!
Same example, but this time having monitored just 70 mg/dl before meal:
Dosage for meal = 60 {gr} * 0.15 {units per gr} = 9 units
Dosage for correction = (70 {mg/dl} - 100 *) {mg/dl}) / 30 {mg/dl per unit} = -1 unit
Insulin units = Dosage for meal + Dosage for correction = 9 - 1 = 8 units
Tips & tricks for data capturing:
You can track your data with the windows client version without mouse clicks. You can use the cursor keys for navigation through the cells. With several special characters you can mark values for the statistics or later reviews:
- Blood glucose readings can be marked with - or -- as a normal or a heavy hypoglycemia. These inputs can even be used without a monitored bg level.
- You can mark a Bolus- and/or Basal-input to be an injection of your second drug type by adding a * If you are usually using a normal short acting insulin but have also something like Humalog for corrections of extra-high levels, you can enter 5* to track a correction with your rapid acting insulin.
- You can split the input of a bolus injection to track the units for correction separately from the units for your carb intake: Just enter 2+7. SiDiary will use the sum for the statistical calculations.
- If you are unsure about the amount of carbs for a meal you can enter i.e. 30-40 (or the exchanges BE, KHE etc.) SiDiary will use the middle for the statistics, in this case 35.
- If you want to enter 0.5 you can start with the decimal point. SiDiary will add the leading 0.
- The timestamps can be entered in military style without the : char. SiDiary will switch 1455 into 14:55 or 2:55pm (following your predefined time format)